Lub luag haujlwm tseem ceeb ntawm Aerosol Propellants hauv kev xa tshuaj tawm tshuaj
Keeb kwm ntawm Aerosol Propellants hauv kev txhim kho kho mob ze li ntawm cov kev daws teeb meem zoo nkauj (HFC) Txoj kev txhim kho ntawm Aerosol cov khoom siv, tseem ceeb tshaj plaws nrog thiab lawv cov kev cuam tshuam rau cov neeg mob tu mob.
Lub CFC era (1950 -1980 s)
Thawj lub ntsuas hluav taws xob feem ntau (PMDIS) tau tshwm sim xyoo 1956, siv cov ntxig rau hauv chloroflingbon (CFC) Cov kev hloov kho thaum ntxov aerosol thaum ntxov no
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Thawj cov propellants thawj
Thawj cov cuab tam pib siv rau hauv cov metered-koob tshuaj (MDIS) yog chlorofluorocarbons:
CFC -11 (Trichlorofluoromethane)
CFC -12 (dichlorodiflometorethane)
CFC -114 (dichlorotetrosraetoroetoroetoroeteane)
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Kev ua txuj ci thiab kev kho mob cuam tshuam
CFC-based aerosol propellants muaj ntau cov txiaj ntsig hauv av qeeg:
Cov kev ntseeg tau zoo ib yam: enabled qhia kev noj tshuaj kho mob
Cov tshuaj zoo heev: Muab lub neej ntev rau cov tshuaj
Qhov Zoo Tshaj Plaws Qhov Loj Me Generation: tsim tawm cov lus tshaj tawm (1-5 μm) zoo tagnrho rau lub ntsws ourition
Nyob rau lub sijhawm no, cov tshuaj hauv landmark siv rau cov cuab yeej CFC suav nrog:
Isoprotereerurol (1956)
Salbutamol (1969)
Beclomethasone dipropionate (1972)
Lub awakenal ib puag ncig
Los ntawm xyoo 1970, kev tshawb fawb tau qhia cfcs 'kev cuam tshuam kev cuam tshuam rau ntawm ozone txheej, ua kom tiav hauv:
Xyoo 1974 Molina-Rowland hypobesis txheeb xyuas CFC-ozone depetion
Xyoo 1987 Montreal Preform PC Daim Ntawv Pom Zoo rau theem tawm ozone-depleting tshuaj
Kev siv zuj zus ntawm CFC bans hauv cov ntawv kho mob
Lub sijhawm hloov pauv (1980s -1990 s)
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Kev txhawj xeeb ib puag ncig muaj
Kev tshawb nrhiav tshawb pom qhia cfcs 'ozone-depleting muaj peev xwm, ua rau:
Xyoo 1987 Montreal Orococ Daim Ntawv Pom Zoo
Clibleual theem-tawm ntawm kev kho mob cfcs
Nrhiav rau lwm cov cuab yeej Aerosol
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Cov kev daws teeb meem
Kev lag luam tsim kev hloov pauv AEROSOL txau cov kev xaiv propellant:
Hydrochlorofluorocarbons (HCFCS)
Blended Cov Tshuab
Thaum ntxov qhuav hmoov nqus neeg ua lwm yam
HFA Revolution (1990s-tam sim no)
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Thib ob cov lus cog lus thib ob
Hydrofluoroales los ua tus qauv tshiab Aerosol propellants roj:
HFA -134 A (1,1,1, {{4 {}} tetrafuoroetore, Norffflurane)
HFA -227 EA (1,1,1,3,3,3,3, 3- heptafluorophane)
Qhov zoo suav nrog:
Xoom ozone depletion muaj peev xwm
Cov ntaub ntawv kev nyab xeeb zoo rau kev siv kho mob
Kev sib xyaw nrog cov qauv tshuaj uas twb muaj
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Niaj hnub nim thov khoom siv
Tam sim no Aerosol Propellants Enable:
Ntau cov tshuaj muaj txiaj ntsig zoo dua rau lub ntsws
Txhim kho ib puag ncig profile
Txhim Kho Tus Neeg Mob Ua Raws
Hloov pauv tawg zuj zus
Kev hloov mus rau HFA Aerosol Propellants yuav tsum muaj qhov tseem ceeb ntawm cov chaw muag tshuaj:
Tshiab Surfactant Tshuab (E . g .}}}, oleic acid, lecithin)
Ethanol raws li co-kuab rau tshuaj solubility
Hloov kho valve thiab actuator tsim
Landmark Hfa-raws li cov tshuaj suav nrog:
HFA-Albuterol (1996)
HFA-Fluticasone (2000)
HFA-Budesonide (2001)
Kev tawm thev naus laus zis (2010s-yav tom ntej)
Kev tshawb fawb tam sim no tsom rau ultra-qis GWP kev xaiv:
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Tom ntej-Generation Processellants
HFA -152 A (1, 1- difluoroetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoetoeteastane)
GWP: 138 (90% txo vs . hfa -134 a)
Vapor siab: 450 KPA ntawm 20 degree
Kev Tshawb Nrhiav Kev Tshawb Fawb
HFO -1234 Ze (Trans -1}}} {{{{{4 tetrosafluoropene)
GWP:<1
Tam sim no nyob rau hauv kev ntsuam xyuas ua ntej
Muaj peev xwm rau cov ntawv thov khomob yav tom ntej
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Yav Tom Ntej Cov Lus Qhia
Kev tshawb fawb tsom rau:
Ultra-tsis muaj ntiaj teb ua kom sov cov kev xaiv
Rho biocompious propellants xaiv
Precision Kev Xa Khoom Tshuab
Cov lus qhia los ntawm keeb kwm, lub zeem muag rau yav tom ntej
Qhov kev hloov kho ntawm cov kws kho mob aerosol ua kom pom cov kev lag luam kev muaj peev xwm los ntawm CFCS thiab dhau los ntawm CFCS thiab dhau, txhua qhov kev hloov pauv tau:
Tswj cov neeg mob nkag mus rau cov tshuaj tseem ceeb
Txhim Kho Kev Xa Khoom Siv Tshuaj
Txo cov kev cuam tshuam ib puag ncig
Raws li kev lag luam txav mus rau ntau cov kev daws teeb meem kev ua kom muaj kev cog lus rau cov neeg mob tom ntej no kom cov neeg mob thoob ntiaj teb .
